Fundamentals of Differential Beamforming
商品資訊
系列名：Springerbriefs in Electrical and Computer
ISBN13：9789811010453
出版社：Springer Verlag
作者：Jacob Benesty; Jingdong Chen; Chao Pan
出版日：2016/05/06
裝訂：平裝
規格：23.5cm*15.5cm (高/寬)
商品簡介
This book provides a systematicstudy of the fundamental theory and methods of beamforming with DMAs, ordifferential beamforming in short. From a physical perspective, a DMA of someorder is defined as an array that measures the differential acoustic pressurefield of that order; such an array has a beampattern in the form of apolynomial whose degree is equal to the DMA order. Therefore, the fundamentaland core problem of differential beamforming boils down to the design ofbeampatterns with orthogonal polynomials. But constraints have to be consideredso that the resulting beamformer does not seriously amplify the sensors’ selfnoise and the mismatches among sensors. In this work, we first present a briefoverview of differential beamforming and some popularly used DMA beampatterns suchas the dipole, cardioid, hypercardioid, and supercardioid. Then, some backgroundknowledge on orthogonal functions and orthogonal polynomials is provided, whichforms the basis of differential beamforming. Several performance criteria aresubsequently revisited, which can be used to evaluate the performance of thederived differential beamformers. Next, differential beamforming is cast into aframework of optimization and linear system solving and it is shown howdifferent beampatterns can be designed with this optimization framework. Afterthat, several approaches are presented to the design of?differential beamformerswith the maximum DMA order, with the control of the white noise gain, and withthe control of both the frequency invariance of the beampattern and the whitenoise gain. Finally, a joint optimization method is explained, which can beused to derive differential beamformers that have almost frequency-invariantbeampatterns and meanwhile are robust to sensors’ self noise.
作者簡介
Jacob Benesty received a Master’sdegree in microwaves from Pierre & Marie Curie University, France, in 1987,and a Ph.D. degree in control and signal processing from Orsay University,France, in April 1991. During his Ph.D. (from Nov. 1989 to Apr. 1991), heworked on adaptive filters and fast algorithms at the Centre National d’Etudesdes Telecommunications (CNET), Paris, France. From January 1994 to July 1995,he worked at Telecom Paris University on multichannel adaptive filters andacoustic echo cancellation. From October 1995 to May 2003, he was first aConsultant and then a Member of the Technical Staff at Bell Laboratories,Murray Hill, NJ, USA. In May 2003, he joined the University of Quebec,INRS-EMT, in Montreal, Quebec, Canada, as a Professor. He is also a VisitingProfessor at the Technion, Haifa, in Israel, an Adjunct Professor at AalborgUniversity, in Denmark, and a Guest Professor at Northwestern PolytechnicalUniversity, Xi’an, Shaanxi, in China.
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Jingdong Chen received the Ph.D.degree in pattern recognition and intelligence control from the Chinese Academyof Sciences in 1998. From 1998 to 1999, he was with ATR InterpretingTelecommunications Research Laboratories, Kyoto, Japan, where he conductedresearch on speech synthesis, speech analysis, as well as objectivemeasurements for evaluating speech synthesis. He then joined the GriffithUniversity, Brisbane, Australia, where he engaged in research on robust speechrecognition and signal processing. From 2000 to 2001, he worked at ATR SpokenLanguage Translation Research Laboratories on robust speech recognition andspeech enhancement. From 2001 to 2009, he was a Member of Technical Staff atBell Laboratories, Murray Hill, New Jersey, working on acoustic signalprocessing for telecommunications. He subsequently joined WeVoice Inc. in NewJersey, serving as the Chief Scientist. He is currently a professor at theNorthwestern Polytechnical University in Xi’an, China. His research interestsinclude acoustic signal processing, adaptive signal processing, speechenhancement, adaptive noise/echo control, microphone array signal processing,signal separation, and speech communication.
?Chao Pan received the Bachelor degree inelectronics and information engineering from the Northwestern PolytechnicalUniversity (NPU) in 2011. He is currently a Ph.D. student in information andcommunication engineering at NPU and also a visiting Ph.D. student at INRS-EMT,University of Quebec. His research interests are in speech enhancement, noisereduction, and microphone array signal processing for hands-free speechcommunications.
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